| 摘要 |
<p>This dispersant for calcium carbonate is capable of providing a calcium carbonate slurry, which has a sufficiently low viscosity and good long-term stability, both by wet pulverization and by stirring dispersion. This dispersant contains a (meth)acrylic acid polymer which is composed of 80-100% by mass of one or more monomers that are selected from among (meth)acrylic acid, potassium (meth)acrylate and magnesium (meth)acrylate and 0-20% by mass of another monomer, and wherein 20-65 mol% of the carboxyl groups of the (meth)acrylic acid polymer is in the form of a potassium salt and 35-70 mol% thereof is in the form of a magnesium salt.</p> |
